Dwarf Galaxies

 

Dynamics of Local Group galaxies: Evidence for a past Milky Way–Andromeda Flyby?

Posted 9 July 2016 by Marcel S. Pawlowski

The following is a guest post by Indranil Banik. Indranil is a PHD student at the University of Saint Andrews, part of the Scottish Universities’ Physics Alliance. He was born in Kolkata, India and moved to the UK with his parents a few years later. Indranil works on conducting tests to try and distinguish between standard and modified gravity, especially by considering the Local Group. Before starting his PhD in autumn 2014, he obtained an undergraduate and a Masters degree from... Read more

The Weizmann Experience: discussions on the future of cosmology

Posted 15 March 2016 by Pavel Kroupa

Together with Francoise Combes, who was recently appointed as a professor in the most prestigeous institution in France, Le College de France, and Benoit Famaey, who is an expert on Milgromian dynamics and its deeper foundations (e.g. Famaey & McGaugh 2012), we were invited by Mordehai (Moti) Milgrom to spend a whole week at the Department of Particle Physics and Astrophysics in the Weizmann Institute in Rehovot, Israel. A link to the video (dubbed in English) of the inaugural lecture... Read more

First Workshop on Progress in Modelling Galaxy Formation and Evolution in Milgromian dynamics — first results achieved with the Phantom of Ramses (PoR) code

Posted 28 July 2015 by Pavel Kroupa

[Note: This web-page is being updated continuously: current status: 26.09.15] LOCATION and TIME: Observatoire astronomique de Strasbourg, Universite de Strasbourg, CNRS UMR 7550, Sept. 21st - 25th 2015 Below are provided 1.BACKGROUND/MOTIVATION 2.HOW TO REGISTER 3.PARTICIPANTS 4.HOTELS 5.PROGRAMME 6.PHANTOM WIKI ORGANISERS: Benoit Famaey (Strasbourg) and Pavel Kroupa (Bonn) 1.BACKGROUND / MOTIVATION: Galaxy-scale data seem to be in accordance with the hypothesis that the extrapolation of Newtonian gravitation by orders of magnitude below the Solar system space-time curvature breaks down completely,... Read more

Are there two types of dwarf galaxies in the universe?

Posted 7 March 2013 by Marcel S. Pawlowski

Dwarf galaxies, that is galaxies less massive than a few billion solar masses, are expected to be formed through two processes. They might either be the luminous components of small dark matter halos, formed early in the universe when gas fell into the potential well of those halos. These dwarf galaxies are called primordial dwarf galaxies (PDGs) and are expected to be dominated by their dark matter content. The other formation mechanism is a process observed even in the present-day... Read more